MP2658 2-31V Standalone Switching Charger QFN-19

MP2658 2-31V Standalone Switching Charger QFN-19

The MP2658 is a highly integrated switching charger designed for portable devices with different battery chemistries.

Key Specifications

Features

• Up to 36V Operating Input Voltage (VIN)
• 45V Max Sustainable Voltage when Not Switching
• Up to 3A of Charge Current (ICC)
• Supports Any Battery Regulation Voltage (VBATT_REG) from 2V to 31V
• 0.5% VBATT_REG Accuracy
• Integrated Input Current (IIN) Sensing and Reverse Blocking FET
• Internal Loop Compensation
• IIN Limit Regulation
• Minimum VIN Regulation
• Charge Operation Indicator

Typical Application Circuit

Applications

• Industrial Medical Equipment
• Power Tools
• Robots and Portable Vacuum Cleaners
• Wireless Speakers
• Walkie Talkies

Design Notes

• Charge current accuracy depends on the sense resistor tolerance, so use a 1% or better part and keep its traces Kelvin-connected.
• Wire the NTC input for JEITA profile control if the pack is charged over temperature.
• Set the input current limit to what the adapter can actually deliver; a limit above the adapter rating causes the input rail to collapse mid-charge.
• Termination current and recharge threshold dominate cycle life in shallow-cycling products.

Common Questions